Skip to main content

Table 2 Bias on the Loevinger's H coefficient as a function of the rate of missing data per item (π), the value of the correlation coefficient ρ between the latent variable Θ and the propensity to have missing data ξ for each method for handling missing data (results for w = 0/w = 1)

From: Imputation by the mean score should be avoided when validating a Patient Reported Outcomes questionnaire by a Rasch model in presence of informative missing data

 

π= 10%

π= 20%

π= 30%

Method

ρ= 0.0

ρ= -0.4

ρ= -0.9

ρ= 0.0

ρ= -0.4

ρ= -0.9

ρ= 0.0

ρ= -0.4

ρ= -0.9

PMS

0.08/0.08

0.08/0.08

0.08/0.07

0.14/0.13

0.14/0.13

0.14/0.13

0.18/0.17

0.18/0.17

0.17/0.16

PMS-R

0.04/0.04

0.04/0.04

0.04/0.04

0.07/0.08

0.07/0.07

0.07/0.07

0.10/0.10

0.09/0.09

0.09/0.09

IMS

-0.02/-0.02

-0.02/-0.02

-0.02/-0.02

-0.03/-0.03

-0.04/-0.04

-0.04/-0.04

-0.04/-0.04

-0.05/-0.05

-0.06/-0.06

IMS-R

-0.04/-0.04

-0.04/-0.04

-0.04/-0.04

-0.07/-0.07

-0.07/-0.07

-0.08/-0.08

-0.09/-0.09

-0.09/-0.09

-0.10/-0.10

CIM

0.09/0.09

0.09/0.09

0.09/0.09

0.15/0.15

0.15/0.15

0.15/0.15

0.19/0.19

0.20/0.20

0.19/0.20

CIM-R

0.05/0.04

0.05/0.04

0.05/0.04

0.08/0.07

0.09/0.07

0.08/0.07

0.11/0.09

0.11/0.09

0.10/0.08

ICS

0.04/0.04

0.04/0.04

0.04/0.04

0.07/0.07

0.07/0.07

0.07/0.07

0.09/0.09

0.09/0.09

0.08/0.08

LOG

0.03/0.04

0.03/0.04

0.03/0.03

0.04/0.04

0.04/0.04

0.03/0.03

0.04/0.03

0.03/0.03

0.00/0.01

LOG-R

-0.01/-0.01

-0.01/-0.01

-0.01/-0.01

-0.02/-0.02

-0.02/-0.03

-0.03/-0.03

-0.04/-0.04

-0.05/-0.05

-0.06/-0.06

MOK

0.05/0.05

0.05/0.05

0.05/0.05

0.09/0.10

0.09/0.09

0.09/0.09

0.12/0.12

0.12/0.12

0.11/0.12

RAS

0.02/0.02

0.02/0.02

0.02/0.02

0.04/0.04

0.04/0.04

0.03/0.04

0.04/0.05

0.04/0.05

0.04/0.05

RAS-R

-0.01/-0.01

-0.01/-0.01

-0.01/-0.01

-0.01/-0.01

-0.01/-0.01

-0.01/-0.01

-0.01/-0.02

-0.02/-0.02

-0.02/-0.02

RAI

0.03/0.03

0.03/0.03

0.03/0.03

0.12/0.10

0.12/0.10

0.11/0.10

0.16/0.15

0.16/0.15

0.15/0.15

WORST

-0.05/-0.04

-0.03/-0.03

-0.02/-0.01

-0.09/-0.07

-0.07/-0.05

-0.04/-0.02

-0.11/-0.09

-0.09/-0.07

-0.07/-0.04

NOIMP

0.00/-0.00

-0.00/-0.00

-0.00/-0.00

-0.00/-0.00

-0.00/-0.00

-0.00/-0.00

-0.00/0.00

-0.01/-0.01

-0.04/-0.04

LD

0.00/-0.00

0.00/-0.00

-0.00/-0.00

-0.00/0.00

-0.00/-0.00

-0.02/-0.01

0.00/0.00

-0.00/-0.00

-0.01/-0.01